Size of particulate matter ranges from ___.<span><br> </span></h2></div>

Bio-agents such as culture of blue green algae are used in preparation of</h2></div>

Find the odd one out:<br> </h2></div>

Which is the most widely used technique for removing particulate matter?

Measurement of rate of oxygen utilisation by a unit volume of water over a period of time is to measure</h2></d…

Which component of the cooked food should not be disposed off into the drain?<br> </h2></div>

Fertilisers are a source of which types of pollution?</h2></div>

A lake with an inflow of domestic sewage, rich in organic waste, may result in<br> </h2></div>